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Commit101c37c

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Disable clang 16's -Wcast-function-type-strict.
Clang 16 is still in development, but seawasp reveals that it hasstarted warning about many of our casts of function pointers (thoseintroduced by commit1c27d16, and some older ones). Disable the newwarning for now, since otherwise buildfarm animal seawasp fails, and wehave no current plans to change our strategy for these callback functiontypes.May be back-patched with other Clang/LLVM 16 changes around releasetime.Discussion:https://postgr.es/m/CA%2BhUKGJvX%2BL3aMN84ksT-cGy08VHErRNip3nV-WmTx7f6Pqhyw%40mail.gmail.com
1 parenta850075 commit101c37c

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3 files changed

+53
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lines changed

3 files changed

+53
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lines changed

‎configure

Lines changed: 44 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -6611,6 +6611,50 @@ fi
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if test -n "$NOT_THE_CFLAGS"; then
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CFLAGS="$CFLAGS -Wno-stringop-truncation"
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fi
6614+
# Suppress clang 16's strict warnings about function casts
6615+
NOT_THE_CFLAGS=""
6616+
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether ${CC} supports -Wcast-function-type-strict, for NOT_THE_CFLAGS" >&5
6617+
$as_echo_n "checking whether ${CC} supports -Wcast-function-type-strict, for NOT_THE_CFLAGS... " >&6; }
6618+
if ${pgac_cv_prog_CC_cflags__Wcast_function_type_strict+:} false; then :
6619+
$as_echo_n "(cached) " >&6
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else
6621+
pgac_save_CFLAGS=$CFLAGS
6622+
pgac_save_CC=$CC
6623+
CC=${CC}
6624+
CFLAGS="${NOT_THE_CFLAGS} -Wcast-function-type-strict"
6625+
ac_save_c_werror_flag=$ac_c_werror_flag
6626+
ac_c_werror_flag=yes
6627+
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
6628+
/* end confdefs.h. */
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6630+
int
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main ()
6632+
{
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6634+
;
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return 0;
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}
6637+
_ACEOF
6638+
if ac_fn_c_try_compile "$LINENO"; then :
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pgac_cv_prog_CC_cflags__Wcast_function_type_strict=yes
6640+
else
6641+
pgac_cv_prog_CC_cflags__Wcast_function_type_strict=no
6642+
fi
6643+
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
6644+
ac_c_werror_flag=$ac_save_c_werror_flag
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CFLAGS="$pgac_save_CFLAGS"
6646+
CC="$pgac_save_CC"
6647+
fi
6648+
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $pgac_cv_prog_CC_cflags__Wcast_function_type_strict" >&5
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$as_echo "$pgac_cv_prog_CC_cflags__Wcast_function_type_strict" >&6; }
6650+
if test x"$pgac_cv_prog_CC_cflags__Wcast_function_type_strict" = x"yes"; then
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NOT_THE_CFLAGS="${NOT_THE_CFLAGS} -Wcast-function-type-strict"
6652+
fi
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6654+
6655+
if test -n "$NOT_THE_CFLAGS"; then
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CFLAGS="$CFLAGS -Wno-cast-function-type-strict"
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fi
66146658
elif test "$ICC" = yes; then
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# Intel's compiler has a bug/misoptimization in checking for
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# division by NAN (NaN == 0), -mp1 fixes it, so add it to the CFLAGS.

‎configure.ac

Lines changed: 6 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -573,6 +573,12 @@ if test "$GCC" = yes -a "$ICC" = no; then
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if test -n "$NOT_THE_CFLAGS"; then
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CFLAGS="$CFLAGS -Wno-stringop-truncation"
575575
fi
576+
# Suppress clang 16's strict warnings about function casts
577+
NOT_THE_CFLAGS=""
578+
PGAC_PROG_CC_VAR_OPT(NOT_THE_CFLAGS,[-Wcast-function-type-strict])
579+
if test -n "$NOT_THE_CFLAGS"; then
580+
CFLAGS="$CFLAGS -Wno-cast-function-type-strict"
581+
fi
576582
elif test "$ICC" = yes; then
577583
# Intel's compiler has a bug/misoptimization in checking for
578584
# division by NAN (NaN == 0), -mp1 fixes it, so add it to the CFLAGS.

‎meson.build

Lines changed: 3 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -1773,6 +1773,9 @@ negative_warning_flags = [
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'format-truncation',
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'stringop-truncation',
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1776+
# Suppress clang 16's strict warnings about function casts
1777+
'cast-function-type-strict',
1778+
17761779
# To make warning_level=2 / -Wextra work, we'd need at least the following
17771780
# 'clobbered',
17781781
# 'missing-field-initializers',

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